package com.xdb.sqlparser.dialect.mysql.ast.expr;

import java.util.ArrayList;
import java.util.List;

import com.xdb.sqlparser.ast.SQLExpr;
import com.xdb.sqlparser.ast.AbstractSQLExprImpl;
import com.xdb.sqlparser.dialect.mysql.visitor.MySqlASTVisitor;
import com.xdb.sqlparser.visitor.SQLAstVisitor;

public class MySqlMatchAgainstExpr extends AbstractSQLExprImpl implements MySqlExpr {

	private List<SQLExpr> columns = new ArrayList<SQLExpr>();

	private SQLExpr against;

	private SearchModifier searchModifier;

	public List<SQLExpr> getColumns() {
		return columns;
	}

	public void setColumns(List<SQLExpr> columns) {
		this.columns = columns;
	}

	public SQLExpr getAgainst() {
		return against;
	}

	public void setAgainst(SQLExpr against) {
		this.against = against;
	}

	public SearchModifier getSearchModifier() {
		return searchModifier;
	}

	public void setSearchModifier(SearchModifier searchModifier) {
		this.searchModifier = searchModifier;
	}

	public static enum SearchModifier {
		IN_BOOLEAN_MODE("IN BOOLEAN MODE"), IN_NATURAL_LANGUAGE_MODE("IN NATURAL LANGUAGE MODE"), IN_NATURAL_LANGUAGE_MODE_WITH_QUERY_EXPANSION("IN NATURAL LANGUAGE MODE WITH QUERY EXPANSION"), WITH_QUERY_EXPANSION(
				"WITH QUERY EXPANSION"), ;

		public final String name;

		SearchModifier() {
			this(null);
		}

		SearchModifier(String name) {
			this.name = name;
		}
	}

	@Override
	protected void accept0(SQLAstVisitor visitor) {
		MySqlASTVisitor mysqlVisitor = (MySqlASTVisitor) visitor;
		if (mysqlVisitor.visit(this)) {
			acceptChild(visitor, this.columns);
			acceptChild(visitor, this.against);
		}
		mysqlVisitor.endVisit(this);
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + ((against == null) ? 0 : against.hashCode());
		result = prime * result + ((columns == null) ? 0 : columns.hashCode());
		result = prime * result + ((searchModifier == null) ? 0 : searchModifier.hashCode());
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}
		MySqlMatchAgainstExpr other = (MySqlMatchAgainstExpr) obj;
		if (against == null) {
			if (other.against != null) {
				return false;
			}
		} else if (!against.equals(other.against)) {
			return false;
		}
		if (columns == null) {
			if (other.columns != null) {
				return false;
			}
		} else if (!columns.equals(other.columns)) {
			return false;
		}
		if (searchModifier != other.searchModifier) {
			return false;
		}
		return true;
	}

}
